<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
					
					// String类 内置了几个使用正则的方法
					
					// match() 返回匹配到的内容
					var str1 = "I'm a boy.";
					var re1 = /boy/i;
					document.write(str1.match(re1)); 
					document.write("<br />")
					// search() 返回的是找到的位置
					var str2 = "I like Javascript";
					var re2 = /Javascript/i;
					document.write(str2.search(re2));// 7
					document.write("<br />")
					// replace
					var str3 = "I like Javascript";
					var re3 = /Javascript/i;
					document.write(str3.replace(re3,"JS"));
					document.write("<br />")
					// split
					var str4 = "Javascrpt,C#,VB_Dart_C++_php";
					var re4 = /[,_]/;
					var arr = str4.split(re4);
					document.write(arr);
			
		</script>
	</body>
</html>
